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Goswami P, Patel T, Dave R, Singh G, Singh A, Kalonia T. WHO 2022 updates on follicular cell and c-cell derived thyroid neoplasm. J Med Life 2024; 17:15-23. [PMID: 38737660 PMCID: PMC11080517 DOI: 10.25122/jml-2023-0270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/19/2023] [Indexed: 05/14/2024] Open
Abstract
The latest edition of the WHO Classification of thyroid tumors was released in 2022 and incorporates novel concepts vital to patient management. Thyroid follicular nodular disease is a term used to collectively represent a wide variety of benign and non-neoplastic lesions, including both clonal and non-clonal proliferations that manifest clinically as multinodular goiter. Thyroid neoplasms develop from follicular cells and can be either benign, low-risk, or malignant. To avoid classifying all lesions under 1 cm in diameter as low-risk illnesses, the new classification method highlights the need for subtyping papillary thyroid cancer based on histomorphologic indicators rather than tumor size. Formerly known as the cribriform-morular variety of papillary thyroid carcinoma, this tumor is now more commonly referred to by its more accurate name, cribriform-morular thyroid carcinoma. Its histogenesis is unknown. Similar to the traditional definition of 'poorly differentiated thyroid carcinoma' according to the Turin criteria, the newly defined 'differentiated high-grade thyroid carcinoma' encompasses papillary thyroid cancer, follicular thyroid carcinomas, and oncocytic carcinomas with high-grade characteristics linked to worse prognosis. The squamous cell subtype of anaplastic thyroid cancer has also recently been characterized as a distinct morphologic pattern. In this article, we will discuss the latest revision to the World Health Organization's classification system for thyroid cancer.
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Affiliation(s)
- Parth Goswami
- Department of Pathology, All India Institute of Medical Sciences, Rajkot, Gurjat, India
| | - Tarang Patel
- Department of Pathology, All India Institute of Medical Sciences, Rajkot, Gurjat, India
| | - Rushang Dave
- Department of Pathology, All India Institute of Medical Sciences, Rajkot, Gurjat, India
| | - Gyanendra Singh
- Department of Pathology, All India Institute of Medical Sciences, Rajkot, Gurjat, India
| | - Anurag Singh
- King George's Medical University, Lucknow, India
| | - Tushar Kalonia
- Department of Pathology, Sharda Hospital, Greater Noida, India
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Rangel-Pozzo A, Dos Santos FF, Dettori T, Giulietti M, Frau DV, Galante PAF, Vanni R, Pathak A, Fischer G, Gartner J, Caria P, Mai S. Three-dimensional nuclear architecture distinguishes thyroid cancer histotypes. Int J Cancer 2023; 153:1842-1853. [PMID: 37539710 DOI: 10.1002/ijc.34667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 06/30/2023] [Accepted: 07/04/2023] [Indexed: 08/05/2023]
Abstract
Molecular markers can serve as diagnostic tools to support pathological analysis in thyroid neoplasms. However, because the same markers can be observed in some benign thyroid lesions, additional approaches are necessary to differentiate thyroid tumor subtypes, prevent overtreatment and tailor specific clinical management. This applies particularly to the recently described variant of thyroid cancer referred to as noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). This variant has an estimated prevalence of 4.4% to 9.1% of all papillary thyroid carcinomas worldwide. We studied 60 thyroid lesions: 20 classical papillary thyroid carcinoma (CPTC), 20 follicular variant of PTC (FVPTC) and 20 NIFTP. We examined morphological and molecular features to identify parameters that can differentiate NIFTP from the other PTC subtypes. When blindly investigating the nuclear architecture of thyroid neoplasms, we observed that NIFTP has significantly longer telomeres than CPTC and FVPTC. Super-resolved 3D-structured illumination microscopy demonstrated that NIFTP is heterogeneous and that its nuclei contain more densely packed DNA and smaller interchromatin spaces than CPTC and FVPTC, a pattern that resembles normal thyroid tissue. These data are consistent with the observed indolent biological behavior and favorable prognosis associated with NIFTP, which lacks BRAFV600E mutations. Of note, next-generation thyroid oncopanel sequencing was unable to distinguish the thyroid cancer histotypes in our study cohort. In summary, our data suggest that 3D nuclear architecture can be a powerful analytical tool to diagnose and guide clinical management of NIFTP.
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Affiliation(s)
- Aline Rangel-Pozzo
- CancerCare Manitoba Research Institute, CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
| | - Filipe F Dos Santos
- Centro de Oncologia Molecular, Hospital Sirio-Libanes, Sao Paulo, Brazil
- Department of Biochemistry, Chemistry Institute, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Tinuccia Dettori
- Department of Biomedical Sciences, University of Cagliari, Monserrato, Italy
| | - Matteo Giulietti
- Department of Specialistic Clinical and Odontostomatological Sciences, Polytechnic University of Marche, Ancona, Italy
| | | | - Pedro A F Galante
- Centro de Oncologia Molecular, Hospital Sirio-Libanes, Sao Paulo, Brazil
| | - Roberta Vanni
- University of Cagliari, Department of Biomedical Sciences, University of Cagliari, Monserrato, Italy
| | - Alok Pathak
- Department of Surgery, University of Manitoba, Winnipeg, Canada
| | - Gabor Fischer
- Department of Pathology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - John Gartner
- Department of Pathology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Paola Caria
- Department of Biomedical Sciences, University of Cagliari, Monserrato, Italy
| | - Sabine Mai
- CancerCare Manitoba Research Institute, CancerCare Manitoba, University of Manitoba, Winnipeg, Canada
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Beg S, Khan SI, Cui I, Scognamiglio T, Rao R. Analysis of a pre-2017 follicular variant papillary thyroid carcinoma cohort reclassified as noninvasive follicular thyroid neoplasm with papillary-like features (NIFTP): an 11-year retrospective single institution experience. J Am Soc Cytopathol 2023; 12:112-119. [PMID: 36372672 DOI: 10.1016/j.jasc.2022.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/05/2022] [Accepted: 09/22/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Noninvasive follicular thyroid neoplasm with papillary-like features (NIFTP), represents a distinct class of thyroid neoplasms with very low risk of adverse outcome and a set of strict histologic criteria. Introduction of NIFTP as a non-cancer has had an appreciable decrease in risk of malignancy and body of literature on this entity continues to grow. In this study, we reviewed clinical, fine-needle aspiration cytology (FNAC), imaging, and molecular findings of histologically proven NIFTPs at our institution. MATERIALS AND METHODS Thyroid resections during an 11-year period, with histologic diagnosis of follicular variant of papillary thyroid carcinoma (FVPTC), were retrospectively reviewed to identify NIFTP. Ultrasonographic appearance, FNA findings, and molecular findings were also reviewed. RESULTS Of 244 cases of FVPTC identified, 74 (30%) cases were reclassified as NIFTP. Mean tumor size was 2.5 cm. Of 33 patients with lymph node dissection, none had lymph node metastases. On imaging, 36 NIFTP (49%) showed vascularity, 25 (33%) were isoechoic to hypoechoic, there were calcifications in 14 cases (19%), and 7 cases (9%) showed a hypoechoic rim. Bethesda III/IV was the most common interpretation rendered on FNAC (31%). Seven cases had NRAS mutations and 1 case had BRAF V600E mutation. The remaining cases were either negative for BRAF V600E or had no identifiable molecular alterations. CONCLUSIONS A significant percentage of tumors previously diagnosed as FVPTC were reclassified as NIFTP. This tumor cannot be reliably diagnosed preoperatively on FNAC, shows no characteristic features on ultrasound and has low suspicion of malignancy. BRAF V600E mutations are infrequent in NIFTP.
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Affiliation(s)
- Shaham Beg
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
| | - Sana Irfan Khan
- Department of Pediatrics, SUNY Downstate Health Sciences University, Brooklyn, New York
| | - Isabella Cui
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
| | - Theresa Scognamiglio
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York
| | - Rema Rao
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, New York; Department of Pathology and Laboratory Medicine, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York.
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Abdelwahab K, Abdallah A, Metwally IH, Awny S, Hamdy O, Ali KM, Zuhdy M. Effect of non-invasive follicular thyroid neoplasm with papillary-like features (NIFTP) terminology on surgical management concepts. REVISTA ESPAÑOLA DE PATOLOGÍA 2022; 56:82-87. [PMID: 37061246 DOI: 10.1016/j.patol.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/01/2022] [Accepted: 11/08/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Despite the strict diagnostic criteria recently proposed for non-invasive follicular thyroid neoplasm with papillary-like features (NIFTP), its incidence is still unknown. Employing a retrospective analysis of the follicular variant of papillary thyroid carcinoma (FVPTC), we investigated the diagnosis, prevalence and postoperative course of NIFTP. METHODS We examined retrospectively the records of 112 patients who had undergone thyroid surgery and had a postoperative diagnosis of FVPTC at our hospital from 2010 to 2021. All clinical, radiologic, and pathologic features were evaluated. RESULTS Only 34 (27.9%) patients met the strict pathologic criteria for NIFTP; 11 cases having been diagnosed as NIFTP initially and 23 after re-evaluation of histopathologic slides. None of the 11 NIFTP patients underwent a 2-stage operation, in contrast to 10 (29.4%) patients initially diagnosed as FVPTC who had a completion thyroidectomy after the initial hemithyroidectomy. The median follow-up was 14.5 (ranging from 0 to 78) months. None of the cases developed a recurrence. CONCLUSION To avoid unnecessary treatment or the follow-up advised for papillary thyroid carcinoma, clinicians and pathologists should be familiar with the terminology and the corresponding diagnostic criteria for NIFTP and their impact on management.
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Affiliation(s)
- Khaled Abdelwahab
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
| | - Ahmed Abdallah
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
| | - Islam H Metwally
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
| | - Shadi Awny
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
| | - Omar Hamdy
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
| | - Khadiga M Ali
- Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt.
| | - Mohammad Zuhdy
- Surgical Oncology Department, Oncology Center Mansoura University (OCMU), Mansoura, Egypt
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Vignali P, Proietti A, Macerola E, Poma AM, Torregrossa L, Ugolini C, Basolo A, Matrone A, Rago T, Santini F, Elisei R, Materazzi G, Basolo F. Clinical-Pathological and Molecular Evaluation of 451 NIFTP Patients from a Single Referral Center. Cancers (Basel) 2022; 14:420. [PMID: 35053581 PMCID: PMC8773775 DOI: 10.3390/cancers14020420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/04/2022] [Accepted: 01/12/2022] [Indexed: 12/10/2022] Open
Abstract
BACKGROUND Non-invasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTPs) were introduced in thyroid pathology in 2016. NIFTPs are a group of follicular neoplasm with an indolent behaviour. In this study, we gathered a large retrospective cohort of NIFTPs and compared those presenting as solitary lesions and NIFTPs found in multifocal setting. METHODS A retrospective search of NIFTPs was performed, and the clinico-pathological features were recorded. For a subgroup of patients, pre-surgical ultrasound (US) evaluation, cytological diagnosis, and molecular analysis were available. RESULTS We collected 451 NIFTPs; 254 (56.3%) were truly solitary tumours, while 197 coexisted with one or more NIFTP/cancer. Contrasting unifocal and multifocal settings, NIFTPs size was the only significantly different parameter. Preoperatively, NIFTP nodules mostly showed low-risk US characteristics, indeterminate cytology and a RAS-like molecular profile. CONCLUSION NIFTPs often coexist with collateral thyroid tumours. However, no clinical-pathological differences can be observed between solitary and "multifocal" NIFTPs. Despite the well-established clinical indolence of NIFTP, a careful monitoring of the contralateral lobe should not be excluded.
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Affiliation(s)
- Paola Vignali
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Agnese Proietti
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Elisabetta Macerola
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Anello Marcello Poma
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Liborio Torregrossa
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Clara Ugolini
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Alessio Basolo
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (A.B.); (A.M.); (T.R.); (F.S.); (R.E.)
| | - Antonio Matrone
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (A.B.); (A.M.); (T.R.); (F.S.); (R.E.)
| | - Teresa Rago
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (A.B.); (A.M.); (T.R.); (F.S.); (R.E.)
| | - Ferruccio Santini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (A.B.); (A.M.); (T.R.); (F.S.); (R.E.)
| | - Rossella Elisei
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (A.B.); (A.M.); (T.R.); (F.S.); (R.E.)
| | - Gabriele Materazzi
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
| | - Fulvio Basolo
- Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, 56126 Pisa, Italy; (P.V.); (A.P.); (E.M.); (A.M.P.); (L.T.); (C.U.); (G.M.)
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Bae JS, Jung SH, Hirokawa M, Bychkov A, Miyauchi A, Lee S, Chung YJ, Jung CK. High Prevalence of DICER1 Mutations and Low Frequency of Gene Fusions in Pediatric Follicular-Patterned Tumors of the Thyroid. Endocr Pathol 2021; 32:336-346. [PMID: 34313965 DOI: 10.1007/s12022-021-09688-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/17/2021] [Indexed: 12/14/2022]
Abstract
Follicular-patterned tumors of the thyroid in the adult population frequently harbor RAS mutations or PAX8-PPARG rearrangement, but little is known about molecular profiles in the pediatric patients with thyroid tumors, which is rare. To identify the molecular profile of pediatric follicular-patterned tumors, we enrolled 41 pediatric patients with follicular-patterned tumors from two institutions. We did next-generation sequencing using a mutation panel targeting 49 thyroid-tumor-related genes and a fusion panel targeting 88 types of thyroid-related gene fusions. We identified nonsynonymous mutations in at least one target gene in most of the tumors (28/41, 68%). Somatic DICER1 mutations (22%, n = 9) were the most common genetic alteration, followed by mutations of NRAS (15%), FGFR3 (15%), PTEN (12%), and STK11 (10%). Infrequent genetic alterations (≤ 5% of all cases) included mutations of HRAS, APC, TSHR, CTNNB1, TP53, EIF1AX, FGFR4, GNAS, RET, and SOS1, and gene fusion of THADA-IGF2BP3. DICER1 and RAS mutations were mutually exclusive. No patients had tumors related to the DICER1 syndrome or the Cowden syndrome. There was no significant difference in total mutation burden or distribution between follicular adenoma and follicular carcinoma. In the literature, the DICER1 mutation has been reported in 20 to 53% of pediatric patients with follicular-patterned tumors. In conclusion, our study reinforces the role of the DICER1 mutation in the development of pediatric thyroid tumors. Gene fusions rarely occur in pediatric follicular-patterned tumors. Mutation or gene fusion alone could not distinguish benign from malignant follicular-patterned tumors in pediatric patients.
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Affiliation(s)
- Ja-Seong Bae
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- College of Medicine, Cancer Research Institute, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Seung-Hyun Jung
- Departmen of Biochemistry, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Mitsuyoshi Hirokawa
- Department of Diagnostic Pathology and Cytology, Kuma Hospital, Kobe, Hyogo, 650-0011, Japan
| | - Andrey Bychkov
- Department of Pathology, Kameda Medical Center, Kamogawa, Chiba, 296-8602, Japan
| | - Akira Miyauchi
- Department of Surgery, Kuma Hospital, Kobe, Hyogo, 650-0011, Japan
| | - Sohee Lee
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- College of Medicine, Cancer Research Institute, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Yeun-Jun Chung
- Cancer Evolution Research Center, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
- College of Medicine, IRCGP, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
| | - Chan Kwon Jung
- College of Medicine, Cancer Research Institute, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.
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Molecular Genetics of Follicular-Derived Thyroid Cancer. Cancers (Basel) 2021; 13:cancers13051139. [PMID: 33799953 PMCID: PMC7961716 DOI: 10.3390/cancers13051139] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/01/2021] [Accepted: 03/03/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Thyroid tumors that derive from follicular cells are not a homogeneous entity, showing variable morphological appearance and different degrees of differentiation. Molecular markers are useful for both diagnostic purposes and prognostic stratification of patients. In presurgical setting, molecular testing of indeterminate thyroid nodules on aspirates provides useful diagnostic information; the molecular analysis on tumor tissues can also reveal the presence of genetic alterations related to patients’ prognosis. In recent years, the molecular characterization of these tumors has acquired even more importance thanks to the introduction of targeted drugs. This review summarizes the current literature on the molecular landscape of follicular-derived thyroid tumors. Abstract Thyroid cancer is the most common type of endocrine-related malignancy, whose incidence rates have increased dramatically in the last few decades. Neoplasms of follicular origin generally have excellent prognosis, with the exception of less differentiated tumors. Follicular-derived thyroid cancer can manifest as a variety of morphologically distinct entities, characterized by various degrees of differentiation and invasiveness. Histological evaluation is thus crucial for the definition of patients’ prognosis. However, within each histological subtype, tumor behavior can be highly variable, and, in this respect, molecular characterization can provide insightful information to refine the risk stratification of tumors. In addition to the importance of its prognostic role, molecular testing can be used to support the differential diagnosis of thyroid nodules in the absence of marked cyto-morphological aberrations. Finally, with the advent of targeted drugs, the presence of molecular alterations will guide the therapeutic strategies for patients with advanced tumors who do not respond to standard treatment. This review aims to describe the genetic landscape of follicular-derived thyroid tumors also highlighting differences across histological subtypes.
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